Use the high sign when teaching your baby contrasting ideas in terms of location, distance, size, etc. You can say that the table is high or low, or that her chair is big or small, and so forth.
Use the high flash card when your baby begins to grasp ideas of size, distance, volume, etc. Use this sign by teaching contrast, starting first with small objects that you can place side by side and progressing to bigger objects like buildings.
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